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P3-type K0.33Co0.53Mn0.47O2•0.39H2O: Novel Bifunctional Electrode for Na-Ion Batteries

Abstract

A novel electrode material, P3-type K0.33Co0.53Mn0.47O2•0.39H2O (KCM) is synthesized through an easily-operated sol-gel method and delivers considerable Na ion storage abilities when employed as both cathode and anode of NIBs. As cathode, the compound displays remarkable average voltage potentials (over 3 V) and a high discharge capacity (114 mAh g-1 at 100 mA g-1). As anode, safe and ideal average voltage potential (0.53 V), high discharge capacity (174 mAh g-1), and long cycle life (950 cycles at 500 mA g-1) are also together delivered.In addition, a KCM-based full cell is subsequently built and even without any optimization it can still exhibit high energy density (91 Wh kg−1) accompanied with long cycle performance (100 cycles at 100 mA g-1).

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Publication details

The article was received on 07 Jul 2017, accepted on 07 Aug 2017 and first published on 07 Aug 2017


Article type: Communication
DOI: 10.1039/C7MH00512A
Citation: Mater. Horiz., 2017, Accepted Manuscript
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    P3-type K0.33Co0.53Mn0.47O2•0.39H2O: Novel Bifunctional Electrode for Na-Ion Batteries

    X. Zhang, S. Wang, T. Sun, S. Yuan, Y. Zhu, J. Yan and Q. Jiang, Mater. Horiz., 2017, Accepted Manuscript , DOI: 10.1039/C7MH00512A

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